345223 has 4 divisors (see below), whose sum is σ = 348880. Its totient is φ = 341568.

The previous prime is 345221. The next prime is 345227. The reversal of 345223 is 322543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345223 - 2¹ = 345221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683 + ... + 1876.

It is an arithmetic number, because the mean of its divisors is an integer number (87220).

2³⁴⁵²²³ is an apocalyptic number.

345223 is a deficient number, since it is larger than the sum of its proper divisors (3657).

345223 is an equidigital number, since it uses as much as digits as its factorization.

345223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656.

The product of its digits is 720, while the sum is 19.

The square root of 345223 is about 587.5568057643. The cubic root of 345223 is about 70.1508989632.

Adding to 345223 its reverse (322543), we get a palindrome (667766).

The spelling of 345223 in words is "three hundred forty-five thousand, two hundred twenty-three".